The All Terrain X package is already available on the smaller Canyon and Sierra 1500 models, and for the Sierra 2500HD it’s available on crew cab versions with four-wheel drive. The package includes the Z71 off-road suspension package as standard, as well as underbody protection and 18-inch wheels shod with special Goodyear tires with an aggressive tread pattern designed for off-roading.

Additional upgrades include an Eaton automatic locking rear differential, as well as a spray-on liner for the tray, and a tray-mounted bar designed for mounting of lookout lights. For the cabin, there’s a heated steering wheel and all-weather floor liners.

Buyers can opt for the Sierra 2500HD’s 6.0-liter V-8 or the new Duramax 6.6-liter V-8, which has 445 horsepower and 910 pound-feet of turbocharged diesel grunt. There are also only two colors to choose from: Black Onyx and Summit White. A potential rival is Ram’s 2500 Off-Road.